Hydraulic power transmitter



Sept. 12, 1933. J. FRASER El AL HYDRAULIC POWER- TRANSMITTER Filed April29. 1951 11200121076 (Ema Frarer Patented Sept. 12, 1933 PATENT OFFICEHYDRAULIC POWER TRANSDIITTER James Fraser and Duncan Campbell, Glasgow,Scotland Application April 29, 1931; Serial No. 533,858,

and in Great Britain July 16, 1930 1 Claim.

The present invention relates to gearless power transmissions and moreparticularly to that class in which a driving member consisting of. aturbine hereinafter referred to as the impeller is employed toaccelerate and maintain in circulation in a closed circuit a liquidwhich in turn strikes against the vanes or blades of a reaction turbineattached to the driven shaftimparting thereto a rotary motion.

The present invention relates to an improved hydraulic power transmitterand has for its object to so construct such transmitter as to besuitable for all conditions of application, but more particularly in itsapplication to motor cars and such like vehicles, marine propulsionelectric motors and any other means of power transmission.

The invention also has for an object to provide certain improved detailconstructions wherein the device is relatively compact and simple inconstruction, and wherein the desired strength may be conserved withrespect to the various operating parts.

With the foregoing and other objects in view,

the invention will be more fully described hereinafter, and will be moreparticularly pointed out in the claim appended hereto.

In the drawing, wherein like symbols refer to like or correspondingparts throughout the sev-.. eral views.

Figure 1 is a sectional elevation of the apparatus illustrating ourinvention.

Figure 2 is an end view of Figure 1 with part in section.

Figure 3 is a diagrammatic view showing the relative positions of thepropeller vanes or blades in the impeller.

Figure 4 is a fragmentary enlarged section through the device, showingthe pitot tube for discharging fluid from the gear circuit, and

Figure 5 is a like view showing the pitot tube for supplying the fluidto the circuit.

Referring to the drawing, H is the outer casing of turbine transmitteron the engine side and I the outer casing on the driven side, C beingthe driving shaft connected to engine and on which shaft is keyed theimpeller turbine B but which is able to slide axially on this shaft C bymeans of the forked lever J fixed to the operating spindle K, anysuitable mechanical arrangement controlled by the driver being employedfor this purpose.

The impeller turbine B has its vanes or blades A so formed and disposedat or near the periphery'that the direction of discharge therefrom formsan acute angle a with the tangent b at point of exit c, see Figure 3,radial divisionplates B being also provided near the center of theimpeller turbine B, and which impeller blades are in direct lineradially with the vanes or blades D of the ahead driven turbine as shownin Figure '1, L being the connecting channel to the return conduit M.The turbine blades D are suitably fixed to, or are integral with thedriven disc F, which disc F is suitablyattached to the driven shaft N.The reversing turbine blades E are also attached to, or are integralwith the driven disc F and are in the same plane axially with the aheadturbine vanes or blades D, but are disposed outside the stationary vanesor blades G, said vanes or blades G being attached to the fixed disc 0.To reverse the driven shaft N, the impeller B is moved along-the drivingshaft C by means of the operating spindle K, and forked lever J by anysuitable means, until the blades A are radially in line with thestationary blades G and reverse turbine blades E, P being the connectingchannel with these to return conduit M. The disc 0 is suitably attachedto the disc Q, this disc Q having suitable holes or passages at itsinner diameter, in line with the entrance to the impeller B, and thereturn conduit M. The inner walls of the conduit M are formed by theinner piece R, which may be integral with the outer casing H, or held inposition by the distance pieces 5 S. Fluid for supplying the workingchamber 'is provided by means of the pitot tube T, or tubes in theconduit M so that their outlet faces in the direction of flow of fluid,or discharge of fluid can be obtained by pitot tubes whose inlets facethe direction of flow of fluid as per arrows a, see Figures 4 and 5.

The disc Q as shown in Figure 1 is fixed to the inner wall R and iscentrally perforated to receive the hub of the impeller turbine B, andprovides a fixed hearing or support for the same. This disc Q islikewise cut or cored out adjacent its inner central portion to permit alimited movement of the impeller turbine B when the ,same is shifted tothe left as shown to reverse claim and desire to secure bvLetters Patentof the United States is: 1

In a hydraulic power transmitter, a casing, a driving shaft mountedco-axially in'the casing,

' a driven shaft disposed co-axially in the casing, an impeller turbineslidably mounted onthe driving shaft and disposed in the casing, anouter disc housed in the casing and connected to the driven shaft,co-operating blades on the impeller turbine and on said disc forefiecting a relative turning movement between the same in one direction,means for shifting the impeller turbine on the driving shaft, a secondset of blades mounted blades of the impeller '-turbine when shifted toreverse the direction of relative turning between the outer disc and theimpeller turbine.

JAMES FRASER. DUNCAN' CAMPBELL.

